WHAT HAS HAPPENED TO KARL LAGERFELD'S TEETH?

The 85-year-old fashion designer's teeth looked worse for wear when he turned on the Christmas lights at the Champs-Elysees in Paris on Thursday.

MailOnline asked some expert dentists what could be to blame for Lagerfeld's missing and damaged teeth and it seems 'years of neglect' and missing veneers are the culprit.

Dr Richard Marques, from Wimpole Street Dental in London said: ‘Years of neglect and possibly a dental phobia have likely led to this deterioration of Karl’s teeth.

'He could have also experienced an accident or traumatic incident with the front teeth which has caused them to fracture. Additionally, it is possible he is in the middle of some extensive treatment to have his teeth fixed.’

Dr Rhona Eskander, a cosmetic dentist in Kensington added: 'It looks as though Karl has had his teeth treated with both crowns and veneers.

'Some of his teeth were obviously being prepared for crown and veneer replacement and the pictures show that he had lost the veneers/crowns.

'A crown is a type of cap that completely covers a real tooth. It's usually made from porcelain and is fixed in your mouth. Crowns can be fitted where a tooth has broken, decayed or been damaged, or just to make a tooth look better.

'To fit a crown, the old tooth will need to be drilled down so it's like a small peg the crown will be fixed on to.

'Veneers are new facings for teeth that disguise a discoloured or damaged tooth. To fit a veneer, the front of the tooth is drilled away a little.'